Current–voltage characteristics and electrical transport properties of grain boundaries in La1−x(Sr/Ca)xMnO3

The electrical transport properties of the molecular nanosilver chain have been investigated. We observed the symmetric negative differential resistance (NDR) in the current-voltage characteristics. The peak voltage (VP) increased but the peak current (IP) decreased upon cooling. The self-capacitance effect of the silver chain crystal is suggested to explain this unconventional NDR phenomenon.

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Current–voltage characteristics and electroresistance in LaMnO3−δ/La0.7Ca0.3MnO3/LaAlO3 thin film composites

Physical Chemistry Chemical Physics ◽

10.1039/c7cp03187d ◽

2017 ◽

Vol 19 (43) ◽

pp. 29294-29304 ◽

Cited By ~ 12

Author(s):

Keval Gadani ◽

M. J. Keshvani ◽

Bhargav Rajyaguru ◽

Davit Dhruv ◽

B. R. Kataria ◽

...

Keyword(s):

Thin Film ◽

Transport Properties ◽

Electrical Transport ◽

Low Cost ◽

Electrical Transport Properties ◽

Single Crystalline ◽

Current Voltage ◽

Current Voltage Characteristics ◽

Thin Film Composites ◽

Film Composites

We report electrical transport properties across the interface of composites consisting of n-type LaMnO3−δ and p-type La0.7Ca0.3MnO3 manganites grown on LaAlO3 single crystalline substrates using low cost wet CSD and well-controlled dry CVD techniques.

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Structural and Electrical Transport Properties of Grain Boundaries in High Temperature Superconductors

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.37-38.107 ◽

1994 ◽

Vol 37-38 ◽

pp. 107-118 ◽

Cited By ~ 4

Author(s):

R. Gross

Keyword(s):

High Temperature ◽

Grain Boundaries ◽

Transport Properties ◽

Electrical Transport ◽

High Temperature Superconductors ◽

Electrical Transport Properties

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Influence of Molar Ratio of Citric Acid to Metal Ions on Structure, Microstructure and Electrical Transport Properties on Nanosized La0.85Na0.15MnO3

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1107.261 ◽

2015 ◽

Vol 1107 ◽

pp. 261-266

Author(s):

Kean Pah Lim ◽

Kuen Hou Cheong ◽

Abdul Halim Shaari ◽

Mansor Hashim ◽

Albert Han Ming Gan ◽

...

Keyword(s):

Citric Acid ◽

Metal Ions ◽

Grain Boundaries ◽

Transport Properties ◽

Electrical Transport ◽

Perovskite Phase ◽

Hexagonal Structure ◽

Molar Ratio ◽

High Resistivity ◽

Electrical Transport Properties

In this paper, nanosized La0.85Na0.15MnO3 (LNMO) has been synthesized via sol-gel method by involving two major steps, first the complexation of citric acid (CA) with metal ions (MI) and second the polyesterification between CA and ethylene glycol (EG). The effect of molar ratio CA:MI varying from 2-4 on structure, microstructure and electrical transport properties of LNMO have been investigated by constant the amount of EG. All samples show single perovskite phase with hexagonal structure and space group R3c after sintering at 800°C for 10h. Sample of molar ratio 2.5 is observed to possess smallest grain sizes which yield high resistivity value compared with others, is suggested to originate from the increase of tunneling barriers (grain boundaries). The large low field magnetoresistance (LFMR) of about ~ -16% at 0.1T and low temperature confirmed the important role of grain boundaries in the nanosized LNMO.

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